1000660651566 has 8 divisors (see below), whose sum is σ = 2001321303144. Its totient is φ = 333553550520.

The previous prime is 1000660651513. The next prime is 1000660651651. The reversal of 1000660651566 is 6651560660001.

It is a sphenic number, since it is the product of 3 distinct primes.

1000660651566 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83388387625 + ... + 83388387636.

It is an arithmetic number, because the mean of its divisors is an integer number (250165162893).

Almost surely, 2^{1000660651566} is an apocalyptic number.

1000660651566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1000660651566 is a wasteful number, since it uses less digits than its factorization.

1000660651566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166776775266.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 1000660651566 in words is "one trillion, six hundred sixty million, six hundred fifty-one thousand, five hundred sixty-six".